Find amplitude of electric field ina parallel beam of light of intensity 2W/m2
Ans:
Given that intensity I=power/area=2W/M2
by using this formula :intensity I=(Emax^2/2c mue not)
from that Emax=magnitude of electric field
c=velocity of light=3*10^8m/sec
mue not =4pi*10^-7
Emax=38.82 N/m